scholarly journals Age-specific acceleration in malignant melanoma

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 27
Author(s):  
Brian L Diffey ◽  
Steven A Frank

Background:The overall incidence of melanoma has increased steadily for several years. The relative change in incidence at different ages has not been fully described. Objective:To describe how incidence at different ages has changed over time and to consider what aspects of tumour biology may explain the observed pattern of change in incidence. Methods:The slope of incidencevsage measures the acceleration of cancer incidence with age. We described the pattern of change over time in the overall incidence of melanoma, as well as in acceleration. We used data for males and females from 3 different countries in the 17 sequential 5-year birth-cohort categories from 1895-99 to 1975-79, from which we derived the incidence patterns. Results:Over time, there has been a tendency for the overall incidence of melanoma to increase and for the acceleration (slope) of the age-incidence curves to decline. The changing patterns of melanoma incidence and acceleration differ between males and females and between the countries analysed. Conclusions:The observed pattern in melanoma of rising incidence and declining acceleration occurs in other cancers in response to genetic knockouts of mechanisms that protect against cancer. Perhaps some protective mechanism with respect to melanoma may be less effective now than in the past, possibly because of more intense environmental challenges.

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 27 ◽  
Author(s):  
Brian L Diffey ◽  
Steven A Frank

Background:The overall incidence of melanoma has increased steadily for several years. The relative change in incidence at different ages has not been fully described. Objective:To describe how incidence at different ages has changed over time and to consider what aspects of tumour biology may explain the observed pattern of change in incidence. Methods:The slope of incidencevsage measures the acceleration of cancer incidence with age. We described the pattern of change over time in the overall incidence of melanoma, as well as in acceleration. We used data for males and females from 3 different countries in the 17 sequential 5-year birth-cohort categories from 1895-99 to 1975-79, from which we derived the incidence patterns. Results:Over time, there has been a tendency for the overall incidence of melanoma to increase and for the acceleration (slope) of the age-incidence curves to decline. The changing patterns of melanoma incidence and acceleration differ between males and females and between the countries analysed. Conclusions:The observed pattern in melanoma of rising incidence and declining acceleration occurs in other cancers in response to genetic knockouts of mechanisms that protect against cancer. Perhaps some protective mechanism with respect to melanoma may be less effective now than in the past, possibly because of more intense environmental challenges.


2010 ◽  
Vol 278 (1712) ◽  
pp. 1626-1632 ◽  
Author(s):  
Yann C. Klimentidis ◽  
T. Mark Beasley ◽  
Hui-Yi Lin ◽  
Giulianna Murati ◽  
Gregory E. Glass ◽  
...  

A dramatic rise in obesity has occurred among humans within the last several decades. Little is known about whether similar increases in obesity have occurred in animals inhabiting human-influenced environments. We examined samples collectively consisting of over 20 000 animals from 24 populations (12 divided separately into males and females) of animals representing eight species living with or around humans in industrialized societies. In all populations, the estimated coefficient for the trend of body weight over time was positive (i.e. increasing). The probability of all trends being in the same direction by chance is 1.2 × 10 −7 . Surprisingly, we find that over the past several decades, average mid-life body weights have risen among primates and rodents living in research colonies, as well as among feral rodents and domestic dogs and cats. The consistency of these findings among animals living in varying environments, suggests the intriguing possibility that the aetiology of increasing body weight may involve several as-of-yet unidentified and/or poorly understood factors (e.g. viral pathogens, epigenetic factors). This finding may eventually enhance the discovery and fuller elucidation of other factors that have contributed to the recent rise in obesity rates.


2011 ◽  
Vol 62 (6) ◽  
pp. 744 ◽  
Author(s):  
John G. West

Although infrequent, shark attacks attract a high level of public and media interest, and often have serious consequences for those attacked. Data from the Australian Shark Attack File were examined to determine trends in unprovoked shark attacks since 1900, particularly over the past two decades. The way people use the ocean has changed over time. The rise in Australian shark attacks, from an average of 6.5 incidents per year in 1990–2000, to 15 incidents per year over the past decade, coincides with an increasing human population, more people visiting beaches, a rise in the popularity of water-based fitness and recreational activities and people accessing previously isolated coastal areas. There is no evidence of increasing shark numbers that would influence the rise of attacks in Australian waters. The risk of a fatality from shark attack in Australia remains low, with an average of 1.1 fatalities year–1 over the past 20 years. The increase in shark attacks over the past two decades is consistent with international statistics of shark attacks increasing annually because of the greater numbers of people in the water.


Crisis ◽  
2014 ◽  
Vol 35 (1) ◽  
pp. 5-9 ◽  
Author(s):  
Daniel Hideki Bando ◽  
Fernando Madalena Volpe

Background: In light of the few reports from intertropical latitudes and their conflicting results, we aimed to replicate and update the investigation of seasonal patterns of suicide occurrences in the city of São Paulo, Brazil. Methods: Data relating to male and female suicides were extracted from the Mortality Information Enhancement Program (PRO-AIM), the official health statistics of the municipality of São Paulo. Seasonality was assessed by studying distribution of suicides over time using cosinor analyses. Results: There were 6,916 registered suicides (76.7% men), with an average of 39.0 ± 7.0 observed suicides per month. For the total sample and for both sexes, cosinor analysis estimated a significant seasonal pattern. For the total sample and for males suicide peaked in November (late spring) with a trough in May–June (late autumn). For females, the estimated peak occurred in January, and the trough in June–July. Conclusions: A seasonal pattern of suicides was found for both males and females, peaking in spring/summer and dipping in fall/winter. The scarcity of reports from intertropical latitudes warrants promoting more studies in this area.


2011 ◽  
Vol 13 (2) ◽  
pp. 201-171
Author(s):  
Nāṣir Al-Dīn Abū Khaḍīr

The ʿUthmānic way of writing (al-rasm al-ʿUthmānī) is a science that specialises in the writing of Qur'anic words in accordance with a specific ‘pattern’. It follows the writing style of the Companions at the time of the third caliph, ʿUthmān b. ʿAffān, and was attributed to ʿUthmān on the basis that he was the one who ordered the collection and copying of the Qur'an into the actual muṣḥaf. This article aims to expound on the two fundamental functions of al-rasm al-ʿUthmānī: that of paying regard to the ‘correct’ pronunciation of the words in the muṣḥaf, and the pursuit of the preclusion of ambiguity which may arise in the mind of the reader and his auditor. There is a further practical aim for this study: to show the connection between modern orthography and the ʿUthmānic rasm in order that we, nowadays, are thereby able to overcome the problems faced by calligraphers and writers of the past in their different ages and cultures.


2016 ◽  
Vol 24 (2) ◽  
pp. 159-169
Author(s):  
M L Mojapelo

Storytelling consists of an interaction between a narrator and a listener, both of whom assign meaning to the story as a whole and its component parts. The meaning assigned to the narrative changes over time under the influence of the recipient‟s changing precepts and perceptions which seem to be simplistic in infancy and more nuanced with age. It becomes more philosophical in that themes touching on the more profound questions of human existence tend to become more prominently discernible as the subject moves into the more reflective or summative phases of his or her existence. The aim of this article is to demonstrate the metaphorical character of a story, as reflected in changing patterns of meaning assigned to the narrative in the course of the subjective receiver‟s passage through the various stages of life. This was done by analysing meaning, from a particular storytelling session, at different stages of a listener‟s personal development. Meaning starts as literal and evolves through re-interpretation to abstract and deeper levels towards application in real life.


Author(s):  
Telesca Giuseppe

The ambition of this book is to combine different bodies of scholarship that in the past have been interested in (1) providing social/structural analysis of financial elites, (2) measuring their influence, or (3) exploring their degree of persistence/circulation. The final goal of the volume is to investigate the adjustment of financial elites to institutional change, and to assess financial elites’ contribution to institutional change. To reach this goal, the nine chapters of the book introduced here look at financial elites’ role in different European societies and markets over time, and provide historical comparisons and country and cross-country analysis of their adaptation and contribution to the transformation of the national and international regulatory/cultural context in the wake of a crisis or in a longer term perspective.


Author(s):  
C. Michael Shea

For the past several decades, scholars have stressed that the genius of John Henry Newman remained underappreciated among his Roman Catholic contemporaries, and in order to find the true impact of his work, one must look to the century after his death. This book takes direct aim at that assumption. Examining a host of overlooked evidence from England and the European continent, Newman’s Early Legacy tracks letters, recorded conversations, and obscure and unpublished theological exchanges to show how Newman’s 1845 Essay on the Development of Christian Doctrine influenced a cadre of Catholic teachers, writers, and Church authorities in nineteenth-century Rome. The book explores how these individuals then employed Newman’s theory of development to argue for the definability of the new dogma of the Immaculate Conception of Mary during the years preceding the doctrine’s promulgation in 1854. Through numerous twists and turns, the narrative traces how the theory of development became a factor in determining the very language that the Roman Catholic Church would use in referring to doctrinal change over time. In this way, Newman’s Early Legacy uncovers a key dimension of Newman’s significance in modern religious history.


Author(s):  
Stephanie Downes ◽  
Sally Holloway ◽  
Sarah Randles
Keyword(s):  
The Past ◽  

This book is about the ways in which humans have been bound affectively to the material world in and over time; how they have made, commissioned, and used objects to facilitate their emotional lives; how they felt about their things; and the ways certain things from the past continue to make people feel today. The temporal and geographical focus of ...


Anticorruption in History is the first major collection of case studies on how past societies and polities, in and beyond Europe, defined legitimate power in terms of fighting corruption and designed specific mechanisms to pursue that agenda. It is a timely book: corruption is widely seen today as a major problem, undermining trust in government, financial institutions, economic efficiency, the principle of equality before the law and human wellbeing in general. Corruption, in short, is a major hurdle on the “path to Denmark”—a feted blueprint for stable and successful statebuilding. The resonance of this view explains why efforts to promote anticorruption policies have proliferated in recent years. But while the subjects of corruption and anticorruption have captured the attention of politicians, scholars, NGOs and the global media, scant attention has been paid to the link between corruption and the change of anticorruption policies over time and place. Such a historical approach could help explain major moments of change in the past as well as reasons for the success and failure of specific anticorruption policies and their relation to a country’s image (of itself or as construed from outside) as being more or less corrupt. It is precisely this scholarly lacuna that the present volume intends to begin to fill. A wide range of historical contexts are addressed, ranging from the ancient to the modern period, with specific insights for policy makers offered throughout.


Sign in / Sign up

Export Citation Format

Share Document